Sept. 21, 2009 | Vol. 6 No. 183
Biogen and Elan voluntarily suspended the marketing of Tysabri (natalizumab) in 2005 because of two PML brain infections in patients taking the drug.
The drug was reintroduced in July 2006 under a restricted distribution program, and from that point until Sept. 8, 13 PML cases, four of them in the U.S., were confirmed in patients taking the drug as monotherapy for MS, the FDA says in a statement.
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1 comments:
WOW...that's pretty scary stuff! And one of the things Sean was scared about in trying Tysabri..developing PML. Very unfortunate for those people who have to go through that.
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